Article
Chemistry, Inorganic & Nuclear
Harish S. Kunchur, Maravanji S. Balakrishna
Summary: The reactions of amide functionalized bisphosphine with platinum salts were studied, resulting in the formation of various complexes. The mechanism of the formation of 1,2-azaphospholene was investigated. Additionally, a palladium complex with low catalyst loading showed excellent catalytic activity in the N-alkylation reaction of amines with alcohols.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Kokila Ranasinghe, Patricia A. Marzilli, Svetlana Pakhomova, Luigi G. Marzilli
Summary: This study investigates the stability and ligand dissociation properties of a series of coordination compounds by synthesizing different ligands. Some ligands exhibit high stability in solution, while others undergo ligand dissociation.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Organic
Robindo Chatterjee, Bappaditya Goswami, Ambika Devi, Swati Rani, Manas Khatua, Subhas Samanta
Summary: Unprecedented metal-free complete o-phenylenebridged N (4)-cyclophanes (M1 and M2) were synthesized via sequential palladium-catalyzed Buchwald-Hartwig N-arylation reactions. These cyclophanes can be considered as aromatic analogues of aliphatic group-spaced N (4)-macrocycles. Physicochemical characterization techniques and single crystal X-ray structure determination were used to fully characterize them. Their redox and spectral properties were characterized by cyclic voltammetry, UV-vis spectro-electrochemistry, fluorescence spectral studies, and DFT calculations. These studies revealed rich redox, spectral, and photophysical properties, making both M1 and M2 potential candidates for various applications.
Article
Chemistry, Organic
Jia Yang, Lei Fan, Chen Chen, Mingyue Wang, Bingqian Sun, Shuai Wang, Hong Zhong, Yongbo Zhou
Summary: In this study, we developed an efficient Ni-catalyzed C-F bond phosphorylation of aryl fluorides using the intermediates of P-P(O) and P(O)OR. We observed that active aryl fluorides can generate organophosphorus compounds via P-P(O) mediation, while inactive aryl fluorides can also be activated and phosphorylated through a P(O)OR-mediated pathway, which has been rarely reported. The scalability to gram level and the possibility of upgrading bioactive molecules suggest promising applications of this protocol in synthetic chemistry.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Organic
Kai-Cheng Yu, Hai Li, Yuan-Hong Tu, Hui Zhao, Xiang-Guo Hu
Summary: We have developed a non-toxic and non-corrosive dual copper/photoredox-catalyzed method for the synthesis of P(O)-N bond from commercially available compounds. This method has a broad substrate scope and is suitable for the direct modification of drug molecules.
Review
Chemistry, Inorganic & Nuclear
Jessica Margalef, Maria Biosca, Pol de la Cruz Sanchez, Jorge Faiges, Oscar Pamies, Montserrat Dieguez
Summary: The success of phosphine-oxazoline ligands has led to advancements in P-oxazoline ligand families, resulting in diverse structures and more efficient ligands for asymmetric transformations. Through proper design, these heterodonor bidentate ligand families exhibit superior catalytic performance in a variety of asymmetric reactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Kelly L. Rue, Jeffrey R. McLachlan, Juliana A. Cazzaniga, Indranil Chakraborty, Christopher J. Dares, Raphael G. Raptis
Summary: Four new structurally similar dinuclear oxorhenium(V) complexes have been synthesized and characterized, showing little variation in spectroscopic features. All complexes exhibit a bent Re-O-Re core and distorted octahedral coordination geometry. A reversible one-electron electrochemical process is observed at approximately 0.84 V vs. Fc(+)/Fc in all four complexes, with a slight destabilization of the oxidized Re(VI) center when changing the terminal halide from chloride to bromide.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Aaron J. Mallek, Bradley L. Pentelute, Stephen L. Buchwald
Summary: This study discusses the selective N-arylation of p-aminophenylalanine in polypeptides using pre-formed palladium oxidative addition complexes, enabling chemoselective C-N bond formation on peptides containing multiple other amino groups. By utilizing palladium complexes derived from electron-poor aryl halides, p-aminophenylalanine can be fully arylated at micromolar concentrations in aqueous buffer in a short amount of time. A complementary protocol using the non-nucleophilic, organic base 1,5-diazabicyclo(4.3.0)non-5-ene (DBN) expands the substrate scope and provides high conversion rates of up to 97%.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Jie Yang, Lizhi Gai, Xiaoyang Chen, Yanfei Liu, Shengmei Wu, Jiao Feng, Xinbing Sui, Hua Lu
Summary: This study synthesized dyes with stable seven-membered N,O-boron-chelated skeleton and thoroughly investigated their photophysical properties through spectroscopic tests and theoretical calculations. Single-crystal X-ray diffraction studies provided evidence of their structure. These dyes produced singlet oxygen species under laser irradiation, showing potential as photosensitizers for treating superficial tumors.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Bruno Noschang Cabral, Jessica Fonseca Rodrigues, Maximilian Roca Jungfer, Anke Krebs, Adelheid Hagenbach, Ernesto Schulz Lang, Ulrich Abram
Summary: In situ prepared lithium arylselenolates or -tellurolates react with [ReOCl3(PPh3)(2)] and (NBu4)Br to form rhenium(V) complexes. The first oxidorhenium(V) complex with four monodentate phenolato ligands was prepared and isolated. Similar reactions with [ReCl3(PPh3)(2)(CH3CN)] or [ReCl3(PMe2Ph)(3)] give trigonal bipyramidal rhenium(III) complexes. The bonding situation in the rhenium(V) and rhenium(III) chalcogenolates was assessed through density functional theory calculations.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Saul M. Cooper, Andrew J. P. White, Thomas R. Eykyn, Michelle T. Ma, Philip W. Miller, Nicholas J. Long
Summary: N-Triphos derivatives are a class of tuneable, tripodal ligands that are related to the coordination chemistry of Re and Tc in biomedical applications. Mixed-ligand approaches can be used to obtain Tc complexes with different core structures and properties. It has been found that the properties of the ligands can affect the configuration and stability of the products.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Gen Li, Steven P. Miller, Alexander T. Radosevich
Summary: The reported method utilizes an organophosphorus catalyst and hydrosilane to drive the cross-selective intermolecular N-N reductive coupling of nitroarenes and anilines, with good chemoselectivity and functional group tolerance. Mechanistic investigations support an autotandem catalytic reaction cascade involving two sequential reduction events to produce the desired N-N bond.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Medicinal
Hadi Amiri Rudbari, Arezoo Saadati, Mahnaz Aryaeifar, Isabel Correia, Fernanda Marques, Olivier Blacque, Nicola Micale
Summary: A series of oxidovanadium(IV) complexes were synthesized and characterized, showing good anticancer activity in ovarian and breast cancer cells. The newly synthesized V(IV)O complexes exhibited the highest cytotoxicity among all tested compounds.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Piotr Pander, Larissa Gomes Franca, Fernando B. Dias, Valery N. Kozhevnikov
Summary: Alkylation of a phenolic hydroxyl group in a salen-type ligand changes its coordination mode and allows the synthesis of a new luminescent Pt(II) complex 2. While the complex is not luminescent in solution, it exhibits emission in the solid state, making it suitable for organic light-emitting diodes. Complex 2 shows high external quantum efficiency and luminance in a vacuum-deposited device. Comparative analysis shows that the luminescent properties of O<^>N<^>N<^>O and C<^>N<^>N<^>O complexes are coincidental, and the two complexes display different electrochemical behavior.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Adrian Alconchel, Olga Crespo, Pilar Garcia-Orduna, M. Concepcion Gimeno
Summary: Two different copper complexes were prepared using different materials, showing significant differences in their luminescent behavior and properties, with one exhibiting time-activated delayed fluorescence and the other showing significant thermochromic luminescence. The transitions responsible for the emissive properties were found to have very different contributions from the copper center, carborane cluster, and diphosphane phenyl rings for each complex.
INORGANIC CHEMISTRY
(2021)
